You must look to the left and right before crossing the street.
You should make sure that the road is clear before crossing.
You don't need to think about safety when you are on the road.
Riding a bike in busy highways is dangerous.
It is necessary to watch out for cars in the street.
Pedestrians must cross the road at the zebra crossing.
You must fasten your seatbelt in a car.
You can play in the street, it is safe.
You mustn't walk on the pavement.
Pushing people isn't bad at all.
